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Finding the Fourth Proportional to 7,036.80, 10,555.04 and 2,876.80

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Solution

The fourth proportional to 7,036.80, 10,555.04 and 2,876.80 is: 4,315.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,036.80 : 10,555.04 = 2,876.80 : x
  2. Step 2: Convert to fraction form
    7,036.80/10,555.04 = 2,876.80/x
  3. Step 3: Cross multiply
    7,036.80x = 10,555.04 × 2,876.80
  4. Step 4: Simplify right side
    7,036.80x = 30,364,739.07
  5. Step 5: Solve for x
    x = 30,364,739.07/7,036.80
  6. Step 6: Final answer
    x = 4,315.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.